diff --git a/res/css/views/rooms/_RoomSublist2.scss b/res/css/views/rooms/_RoomSublist2.scss
index 8dfc117533..3117ebcc5f 100644
--- a/res/css/views/rooms/_RoomSublist2.scss
+++ b/res/css/views/rooms/_RoomSublist2.scss
@@ -414,6 +414,7 @@ limitations under the License.
         margin-bottom: 16px;
         margin-right: 16px; // additional 16px
         border: 1px solid $roomsublist2-divider-color;
+        opacity: 0.1;
     }
 
     .mx_RoomSublist2_contextMenu_title {
diff --git a/res/themes/dark/css/_dark.scss b/res/themes/dark/css/_dark.scss
index 69fc91f222..1546e7a400 100644
--- a/res/themes/dark/css/_dark.scss
+++ b/res/themes/dark/css/_dark.scss
@@ -113,7 +113,7 @@ $theme-button-bg-color: #e3e8f0;
 $roomlist2-button-bg-color: #1A1D23; // Buttons include the filter box, explore button, and sublist buttons
 $roomlist2-bg-color: $header-panel-bg-color;
 
-$roomsublist2-divider-color: #e9eaeb;
+$roomsublist2-divider-color: $primary-fg-color;
 
 $roomtile2-preview-color: #9e9e9e;
 $roomtile2-default-badge-bg-color: #61708b;
diff --git a/res/themes/light/css/_light.scss b/res/themes/light/css/_light.scss
index 57dc1fa5e0..c4b4262642 100644
--- a/res/themes/light/css/_light.scss
+++ b/res/themes/light/css/_light.scss
@@ -180,7 +180,7 @@ $theme-button-bg-color: #e3e8f0;
 $roomlist2-button-bg-color: #fff; // Buttons include the filter box, explore button, and sublist buttons
 $roomlist2-bg-color: $header-panel-bg-color;
 
-$roomsublist2-divider-color: #e9eaeb;
+$roomsublist2-divider-color: $primary-fg-color;
 
 $roomtile2-preview-color: #9e9e9e;
 $roomtile2-default-badge-bg-color: #61708b;